Invention Grant
- Patent Title: Methods for improving the sweep efficiency of gas injection
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Application No.: US14167892Application Date: 2014-01-29
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Publication No.: US09644134B2Publication Date: 2017-05-09
- Inventor: Gary F. Teletzke , Jasper L. Dickson , Preeti Kamakoti , Stuart R. Keller , William B. Maze , Peter G. Smith, Jr. , Yitian Xiao
- Applicant: Gary F. Teletzke , Jasper L. Dickson , Preeti Kamakoti , Stuart R. Keller , William B. Maze , Peter G. Smith, Jr. , Yitian Xiao
- Applicant Address: US TX Spring
- Assignee: ExxonMobil Upstream Research Company
- Current Assignee: ExxonMobil Upstream Research Company
- Current Assignee Address: US TX Spring
- Agency: ExxonMobil Upstream Research Company Law Dept.
- Main IPC: E21B43/16
- IPC: E21B43/16 ; C09K8/508 ; C09K8/594 ; C09K8/504 ; C09K8/516

Abstract:
A method for recovering oil from a subterranean, hydrocarbon-bearing formation includes at least one injection well and injecting a carrier fluid including a diverting agent into a high permeability pathway within the formation. An activating fluid is injected into the high permeability pathway within the formation, resulting in the precipitation or swelling of the diverting agent. The permeability of the high permeability pathway is decreased within the formation containing the diverting agent to a permeability less than the permeability of the adjacent areas of the formation. A mineralization fluid may be injected that is oversaturated or becomes oversaturated upon interacting with the acid gas that causes mineral precipitation to seal off high-permeability pathways.
Public/Granted literature
- US20140262255A1 METHODS FOR IMPROVING THE SWEEP EFFICIENCY OF GAS INJECTION Public/Granted day:2014-09-18
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